{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665370465",
    "entityType": "User",
    "nonce": "0x57d3e9b81d63eba74bde8ab03553aca5a2718a3f7bd6f114e95065e4c2c68620",
    "signature": "0x45c1ed071145028ca689ddb05b4e3fc3443a171a8181cb3f510f590ae145d465744566dfcb871ca25c2b2a26720a013306d50685d74266b6a21ca0b3a1d850591c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}